I created a script that rotates, scales, or positions an object using a sin() function...

The script makes the object animate smoothly in any vector direction. It combines several different scripts I was originally using.

I've also been trying to make a simple water shader, but its been really difficult. I can't get anything to work on my Android device, so it could just be my device. The effect (shown above) draws a nice shoreline around the edges of the water.

I also had to change the cameras from Orthographic to Perspective, because orthographic doesn't render depth, which is required for the water-edge effect.